Marriott Design Standards Module 14 [hot] Official
: Specialized systems to clear smoke from corridors, atriums, and public areas, ensuring exit signs remain visible.
5–10 fc (54–108 lux) at night; 20 fc (215 lux) at day. Vertical Illuminance (door face): 15 fc (161 lux) minimum for face recognition. marriott design standards module 14